The two major air masses affecting the climate of West Africa are the

• A. Harmattan wind and the southwest monsoon
• B. Southwest monsoon and the tropical maritime
• C. Tropical continenal and the tropical maritime
• D. Warm equatorial and the tropical maritime

Plants which manufacture food from simple inorganic substances are called

• A. heterotrophs
• B. autotrophs
• C. photosynthesis
• D. decomposers

In developed countries, a greater percentage of the working population are engaged in?

• A. tertiary activity only
• B. primary and tertiary activities
• C. secondary and tertiary activities
• D. primary and secondary activities

Which of the following are water pollutants?

• A. aquatic animals
• B. shrimps
• C. dissolved fertilizers
• D. water plants

Which of the following West Africa countries is the largest producer of groundnut?

• A. Burkina Faso
• B. Mali
• C. Guinea Bissau
• D. Senegal

Circular depression formed in the bed of an upper course river is known as

• A. Interlocking spurs
• B. Plunge pools
• C. Rapids
• D. Potholes

(a) Calculate the

(i) annual temperature range

( i) mean month y temperature

(ii) total annual rainfall

(b) (i) Suggest the climatic region where the station could be found

(ii) Give two reasons to support your answer b(i) above

(c) In which hemisphere is the station located?

The highest concentration of industries in Nigeria is found in the

• A. South-eastern zone
• B. North-central zone
• C. Western zone
• D. Mid-western zone

Which of the following combinations of factors BEST accounts for the evolution of cities?

• A. Food surplus, transport and relief
• B. Climate, division of labour and food surplus
• C. Transport, defence and climate
• D. Food surplus, defence and division of labour

When two or more towns grow to join each or one another and still retain their identities they form a

• A. metropolis
• B. conurbation
• C. domitory town
• D. satellite town